obama had to leave to go to a christmas party, so he left bill clinton there alone, which she loved to do, talking to the press. after that, there were golf outings together, bringing the two together, and then there was the political strategist for president obama, david axelrod, who went to harlem and visited president clinton to go over the data that they had accumulated, the polling research, and so on, and, of course, clinton loved that. he is, above all, a political animal. he loves to be a campaign manager himself. that sort of brought him into the fold more, and then he started doing campaign advertisements for obama and holding fund-raisers drawing with obama to the point where finally president obama asked him, called the president and said, "would you give the nominating speech for me?" and that cemented it.